Lasso Security researcher Andrea Siposova on September 17, 2026 published The Provenance Tax: Understanding the Impact of LLM Watermarking on AI Agent Behavior, a study reporting that SynthID-Text text watermarking can change whether a language model refuses a harmful request and which tool calls an AI agent generates. The study names the behavioral effect “sampling drift.” According to the study, watermarking is designed for provenance, but SynthID-Text changes the process by which a model…